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Fieldiana, Popular series, Botany, was published by Field Museum of Natural History, Dept. of Botany as Leaflet (no. 1-9, 1922-1924) and as Botany leaflet (no. 10-25, 1924-1940), and by Chicago Natural History Museum as Popular series: Botany (no. 26-27, 1947-1950) Topics: Trees, Trees -- North America, Bomen (biologie)